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1. 发明授权

US07238640B2 Minimization of purge NOx release from NOx traps by optimizing the oxygen storage capacity 有权
标题翻译：通过优化氧气存储容量，最大限度地减少NOx捕集器的NOx排放
公开(公告)号：US07238640B2
公开(公告)日：2007-07-03
申请号：US10707659
申请日：2003-12-30
申请人： Hungwen Jen , Gopichandra Surnilla , Christian Goralski, Jr. , Joseph Theis , Justin Ura
发明人： Hungwen Jen , Gopichandra Surnilla , Christian Goralski, Jr. , Joseph Theis , Justin Ura
IPC分类号： B01J23/00 , B01J21/00 , B01J20/00
CPC分类号： B01D53/9422 , B01D53/96 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/2065 , B01D2255/908 , B01D2255/91 , B01J23/58 , B01J23/63 , B01J37/0244 , Y02C20/10
摘要： The present invention provides a catalyst for use in a NOx trap that has reduced NOx release during rich purges, increased NO conversion efficiency under stoichiometric conditions, and improved sulfur tolerance. The catalyst of this embodiment includes a precious metal, an oxygen storage component in contact with the precious metal, and a NOx storage material. The oxygen storage component in contact with the precious metal is present in an amount that provides sufficient oxygen storage capacity to reduce the NOx release from the NOx trap during rich purges to less than 20% of the NOx that is stored in the NOx trap across the operating temperature window of the NOx trap, increase the NOx conversion efficiency under stoichiometric conditions to a value greater than 70%, and increase the sulfur tolerance of the NOx trap.
摘要翻译：本发明提供了一种用于在富集清洗期间减少NO x释放，在化学计量条件下提高NO转化效率和改善硫耐受性的NO X阱捕集器中的催化剂。该实施方案的催化剂包括贵金属，与贵金属接触的储氧组分和NO x X存储材料。与贵金属接触的储氧组分以提供足够的储氧能力的量存在，以便在富含清洗期间将NO x 2+释放从NO X 2捕集器中减少至在NO 陷阱的工作温度窗口中存储在NO 陷阱中的小于20％的NO 增加了在化学计量条件下的转化效率为大于70％的值，并且增加了NO x陷阱的耐硫性。

2. 发明授权

US07622095B2 Catalyst composition for use in a lean NOx trap and method of using 有权
标题翻译：用于贫NOx捕集剂的催化剂组合物及其使用方法
公开(公告)号：US07622095B2
公开(公告)日：2009-11-24
申请号：US11156898
申请日：2005-06-20
申请人： John Li , Christian Goralski, Jr. , William Watkins , George Graham , Harendra Gandhi
发明人： John Li , Christian Goralski, Jr. , William Watkins , George Graham , Harendra Gandhi
IPC分类号： B01D53/94 , B01J23/02 , B01J23/46
CPC分类号： B01D53/9422 , B01D2255/1026 , B01D2255/2042 , B01J23/58 , F23J15/02 , F23J2219/10
摘要： A lean NOx trap composition. The lean NOx trap composition utilizes ruthenium in place of higher cost metals such as platinum. The lean NOx trap composition provides high NOx storage efficiency and high NOx conversion efficiency when incorporated in a lean NOx trap. A method of removing harmful gases using the lean NOx trap composition is also described.
摘要翻译：贫NOx捕集组合物。贫NOx捕集组合物使用钌代替较高成本的金属如铂。当稀氮氧化物捕集器组合物结合在贫NOx捕集器中时，稀的NOx捕获组合物提供高的NOx储存效率和高的NOx转化效还描述了使用贫NOx捕集组合物去除有害气体的方法。

3. 发明授权

US07870724B2 Lean NOx trap with PGM zoned axially 有权
标题翻译：带有PGM的精益NOx捕集器轴向分区
公开(公告)号：US07870724B2
公开(公告)日：2011-01-18
申请号：US10904414
申请日：2004-11-09
申请人： Justin Ura , Joseph Theis , Christian Goralski, Jr.
发明人： Justin Ura , Joseph Theis , Christian Goralski, Jr.
IPC分类号： B01D53/56 , B01D53/94 , B01J23/02 , B01J23/04 , B01J23/38 , B01J23/40 , B01J23/58 , F01N3/10 , F01N3/20 , F01N3/28
CPC分类号： B01J23/58 , B01D53/9477 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/91 , B01J23/40 , B01J35/0006 , Y02T10/22
摘要： The present invention provides a thermally stable catalyst for treating automobile exhaust by-products is provided. The catalyst of the invention comprises a first section that includes a precious metal present in a first concentration and a second section that includes a precious metal present in a second concentration. The catalyst of the invention is characterized by a unique precious metal concentration profile in which the first concentration of the precious metal is lower than the second concentration of the precious metal. When placed with an automobile exhaust system, the second section is positioned downstream of the first section. The present invention also provides a lean NOx trap utilizing the unique precious metal concentration profile. The NOx trap is found to possess improved NOx conversion performance relative to a NOx trap with the same total amount of precious metal deposited uniformly over the volume of the trap.
摘要翻译：本发明提供一种用于处理汽车尾气副产物的热稳定催化剂。本发明的催化剂包括第一部分，其包括以第一浓度存在的贵金属和包含以第二浓度存在的贵金属的第二部分。本发明的催化剂的特征在于，贵金属的第一浓度低于贵金属的第二浓度的独特的贵金属浓度分布。当与汽车排气系统一起放置时，第二部分位于第一部分的下游。本发明还提供了利用独特的贵金属浓度分布的贫NOx捕集器。发现NOx捕集器相对于具有均匀沉积在捕集器的体积上的相同总量的贵金属的NOx捕集器具有改善的NOx转化性能。

4. 发明授权

US07749474B2 Catalyst composition for use in a lean NOx trap and method of using 有权
标题翻译：用于贫NOx捕集剂的催化剂组合物及其使用方法
公开(公告)号：US07749474B2
公开(公告)日：2010-07-06
申请号：US11157192
申请日：2005-06-20
申请人： John Li , William Watkins , Christian Goralski, Jr. , Harendra Gandhi
发明人： John Li , William Watkins , Christian Goralski, Jr. , Harendra Gandhi
IPC分类号： B01D53/65 , B01J23/00 , B01J23/58
CPC分类号： B01D53/9422 , B01D2255/1026 , B01D2255/2022 , B01D2255/2042 , B01D2255/91 , B01J23/462 , B01J23/58
摘要： A lean NOx trap composition. The lean NOx trap composition utilizes ruthenium in place of higher cost metals such as platinum. The lean NOx trap composition provides high NOx storage efficiency and high NOx conversion efficiency when incorporated in a lean NOx trap. A method of removing harmful gases using the lean NOx trap composition is also described.
摘要翻译：贫NOx捕集组合物。贫NOx捕集组合物使用钌代替较高成本的金属如铂。当稀氮氧化物捕集器组合物结合在贫NOx捕集器中时，稀的NOx捕获组合物提供高的NOx储存效率和高的NOx转化效还描述了使用贫NOx捕集组合物去除有害气体的方法。

5. 发明授权

US07137249B2 Thermally stable lean nox trap 有权
标题翻译：热稳定的稀缺型陷阱
公开(公告)号：US07137249B2
公开(公告)日：2006-11-21
申请号：US10710922
申请日：2004-08-12
申请人： John Li , William Watkins , Christian Goralski, Jr.
发明人： John Li , William Watkins , Christian Goralski, Jr.
IPC分类号： F01N3/10
CPC分类号： B01D53/9422 , B01D2255/102 , B01D2255/204 , B01D2255/2047 , B01D2255/2066 , B01D2255/2073 , B01D2255/91 , B01J23/58 , B01J23/6562 , F01N3/0807 , Y02T10/20
摘要： The present invention provides a method of removing harmful gases from an automobile exhaust. The method of the invention comprises contacting a thermally stable NOx trap composition with a first exhaust gas mixture at a temperature of at least 200° C. The first exhaust gas mixture includes exhaust gases from an internal combustion engine operating in a fuel-lean condition. After, NOx has been absorbed onto the NOx absorber material, the NOx trap composition is then contacted with a second exhaust gas composition. In this step, the second exhaust gas mixture includes exhaust gases from an internal combustion engine operating in a fuel-rich condition. The present invention also provides the NOx trap composition used in the method. The NOx trap of the invention includes a precious metal, a NOx absorber material, an oxide that inhibits the decrease in NOx storing ability of the NOx trap composition, and a support material.
摘要翻译：本发明提供一种从汽车尾气除去有害气体的方法。本发明的方法包括在至少200℃的温度下使热稳定的NO x X捕集组合物与第一废气混合物接触。第一废气混合物包括来自内燃机在燃料贫乏状态下运行。之后，NO x x吸收剂被吸收到NO x吸收剂材料上，然后将NO XSM捕集组合物与第二废气组合物接触。在该步骤中，第二废气混合物包括来自富燃料条件的内燃机的废气。本发明还提供了该方法中使用的NO x陷阱组合物。本发明的NO X阱捕集器包括贵金属，NO x x吸收材料，抑制NO x x存储能力降低的氧化物的防水组合物，以及载体材料。

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